Vanguard Heating 107156-01E.pdf installation manual Inspecting Burners, Pilot Flame Pattern

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INSPECTING BURNERS

Pilot Flame Pattern

Front Burner Flame Pattern

INSPECTING BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 32 shows a correct pilot flame pattern. Figure 33 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the fireplace will shut down.

If pilot flame pattern is incorrect, as shown in Figure 33

•turn fireplace off (see To Turn Off Gas to Appliance, page 15 [thermostat-controlled models] or page 17 [manually-controlled models])

•see Troubleshooting, pages 20 through 22

Pilot Burner

Thermocouple

Figure 32 - Correct Pilot Flame Pattern

Pilot Burner

Thermocouple

FRONT BURNER FLAME PATTERN

Figure 34 shows correct front burner flame pattern. Figure 35 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.

WARNING: If front burner flame pattern shows yellow tipping, your fireplace could produce increased levels of carbon monoxide. Follow instructions at bot- tom of this page. Yellow flame on rear burner is normal.

NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by fireplace, causing brief patches of orange flame.

If front burner flame pattern is incorrect, as shown in Figure 35

•turn fireplace off (seeTo Turn Off Gas to Appliance, page 15 [ther- mostat-controlled models] or page 17 [manually-controlled models])

•see Troubleshooting, pages 20 through 22

Figure 34 - Correct Front Burner Flame Pattern

Figure 33 - Incorrect Pilot Flame Pattern

Yellow Tipping At

Top of Blue Flame

Figure 35 - Incorrect Front Burner Flame Pattern

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107156-01E